Igniter for explosive-engines



(No Model.)

0. MUELLER.

IGNITER FOR EXPLOSIVE ENGINES.

No. 582,540. Patented May 11, 1897.

\NVEN'TOR,

OSCAR jTLiELLE R...

UNITED STATES PATENT OFFICE.

OSCAR MUELLER, OF DECATUR, ILLINOIS,

IGNITER FOR EXPLO$EVEENGENES.

SPECIFICATION forming part of Letters Patent NO, 582,540, dated May 11, 1897.

Application filed July 22, 1896, Serial No. 600,168. (No model.)

To (bZZ whontizl' 'I'ItfbZ/ concern:

Be it known that I, OSCAR MUELLER, of Decatur, in the county of Macon and State of Illinois, have invented certain new and useful Improvements in Igniters for'ExplosiveEngines, of which the following is a specification.

This invention is designed to supply simplified and improved means for igniting the explosive of a gas or other explosive engine through the instrumentality of an electric spark. It is embodied in the structure hereinafter described, and it is defined in the appended claims.

In the drawings forming part of this speci fication, Figure 1 is a central section through a head of a gas-engine cylinder constructed and equipped in accordance with my invention. Fig. 2 is a face View of a n0n-conductor disk made of glass, marble, or some other substance of considerable strength. Fig. 3 is a section through the disk shown in Fig. 2. Fig. 4 is a representation of an annular nut with its inner end presented to View. Fig. 5 is a face view of the outer side of the cylinder-head with the igniter applied thereto and supplied with electric wires In constructing an ign'iter in accordance with my invention the cylinder-head (designated by 1 in the drawings) is recessed or dished, as shown at 2, and it has a central circular opening at 3. An annular seat at is formed in the wall of the opening, and an interiorly-screw-threaded rim 5 projects outward from the seat. A disk 6 of some firm non-conducting material is placed on the seat 4, thereby closing opening 3, and it is securely held against the seat by nut 10. The nut is annular, it is exteriorly threaded over a part of its outer surface, and it has a wrench-seat, preferably external, which enables it to be screwed into the rim and against the disk.

The disk has two holes, (shown at o in Figs. 2 and 3,) such holes being parallel with the axis of the disk on opposite sides thereof and about midway between the axis and the perimeter. Pole-pieces, as 8, have shanks 7,

that extend through the holes of the disk, and such shanks are threaded on their extended ends to screw into binding-posts 9. The binding-posts are accessible through opening 11 in nut 10, and wires, as 12 and 13, connect the posts with a battery or other developer of electricity.

The pole-pieces are presented one toward the other in proper position to create a spark when a current is developed, and the spark is applied directly to the explosive in the cylinder.

The igniter may be detached from the cylinder-head without detaching the head from the cylinder, and the cylinder-hcad may be detached from the cylinder without affecting the igniter.

It is not impossible that each pole-piece should be set in a separate disk or the equivalent thereof and the disks be each secured in the head in the manner described, and while this modification would not be so dosirable as the form described it is included in the broad idea of the invention.

What I claim as new, and desire to secure by Letters Patent, is-

1. An igniter for explosive-engines comprising a cylinder-head having an opening with a seat formed therein and a threaded rim encircling and extending outward from the seat, a non-conductor disk bearing against the seat and closing the opening, an annular nut screwed into the rim and against the disk, and a circuit-wire connected with a pole-piece that extends through the disk, substantially as set forth.

2. An igniter for explosive-engines comprising a cylinder-head having an opening with a seat formed therein and a threaded rim encircling and extending outward from the seat, a non-conductor disk bearing against the seat and closing the opening, an annular nut screwed into the rim and against the disk, pole-pieces having shanks extended through holes in the disk and connected with bindingposts outside the same, and circuit-wires connected with the binding-posts through the annular nut, substantially as set forth.

In testimony whereof I sign my name-in the presence of two subscribing witnesses.

OSCAR MUELLER.

AtiJOSbi MINNIE Ilorr, ALBERT H. BARBER. 

